| 1 | /* How much read-only Lisp storage a dumped Emacs needs. |
| 2 | Copyright (C) 1991 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GNU Emacs. |
| 5 | |
| 6 | GNU Emacs is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 1, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GNU Emacs is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Emacs; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | /* # bytes of pure Lisp code to leave space for. |
| 21 | |
| 22 | At one point, this was defined in config.h, meaning that changing |
| 23 | PURESIZE would make Make recompile all of Emacs. But only a few |
| 24 | files actually use PURESIZE, so we split it out to its own .h file. |
| 25 | |
| 26 | Make sure to include this file after config.h, since that tells us |
| 27 | whether we are running X windows, which tells us how much pure |
| 28 | storage to allocate. */ |
| 29 | |
| 30 | #ifndef PURESIZE |
| 31 | #ifdef HAVE_X_WINDOWS |
| 32 | #define PURESIZE 200000 |
| 33 | #else |
| 34 | #define PURESIZE 196000 |
| 35 | #endif |
| 36 | #endif |
| 37 | |
| 38 | #ifdef VIRT_ADDR_VARIES |
| 39 | |
| 40 | /* For machines like APOLLO where text and data can go anywhere |
| 41 | in virtual memory. */ |
| 42 | #define CHECK_IMPURE(obj) \ |
| 43 | { extern int pure[]; \ |
| 44 | if ((PNTR_COMPARISON_TYPE) XPNTR (obj) < (PNTR_COMPARISON_TYPE) ((char *) pure + PURESIZE) \ |
| 45 | && (PNTR_COMPARISON_TYPE) XPNTR (obj) >= (PNTR_COMPARISON_TYPE) pure) \ |
| 46 | pure_write_error (); } |
| 47 | |
| 48 | #else /* not VIRT_ADDR_VARIES */ |
| 49 | #ifdef PNTR_COMPARISON_TYPE |
| 50 | |
| 51 | /* when PNTR_COMPARISON_TYPE is not the default (unsigned int) */ |
| 52 | #define CHECK_IMPURE(obj) \ |
| 53 | { extern int my_edata; \ |
| 54 | if ((PNTR_COMPARISON_TYPE) XPNTR (obj) < (PNTR_COMPARISON_TYPE) &my_edata) \ |
| 55 | pure_write_error (); } |
| 56 | |
| 57 | #else /* not VIRT_ADDRESS_VARIES, not PNTR_COMPARISON_TYPE */ |
| 58 | |
| 59 | #define CHECK_IMPURE(obj) \ |
| 60 | { extern int my_edata; \ |
| 61 | if (XPNTR (obj) < (unsigned int) &my_edata) \ |
| 62 | pure_write_error (); } |
| 63 | |
| 64 | #endif /* PNTR_COMPARISON_TYPE */ |
| 65 | #endif /* VIRT_ADDRESS_VARIES */ |
| 66 | |